Paper file



Sept. 29, 1931. T. RENGMANN 1,824,791

PAPER FILE Filed Dec. 23, 1929 2 Sheets-Sheet 1 fiwm for,

Sept. 29, 1931.. T. RENGMANN PAPER FILE Filed Dc. 23. 1929 2Sheets-Sheet 2 7 THURE BENGMAN1\T,- or IBERLIN-GHABLOTTENBURG, GERMANY,ASSIGNOR or onn- Patented Sept. 29, 1931 I UNITED STATES PATENT OFFICEHALF TO GRUNEWALDS REGISTRATOR CO. AKT. GES., OF BERLIN, GERMANY PAPERFILE- Application filed necember 23, 1929, Serial'No. 416,091, and inGermany December 31, 1928.

This invention relates to aqpaper fileor loose-leaf binder of the kindcomprising two hingedly-connected file members having arched prongswhich are concentric'about the hinge, one of the file members beingpivoted to as'upporting plate so as to allow the hinge to be raised fromthe plate for opening out the prongs. In a. known file of this kind thefile members are provided with means for preventing the prongs normallyfrombeingsep: arated. According tothe present invention means areprovided for arresting the pivot-ed file member in different angularpositions relative to the supporting base,;the other member being at thesame time controlled by abutment against the base so as to determine theextent to'which the prongs are opened out...

Figs. 1, 2 and 3 of the accompanying draw ings are side views of oneform of the device shown in different positions of adjustment,

Fig. 4 is a view at right-angles to 3 looking in the direction of thearrow on same, i Fig. 5 is a view on an enlarged scale of the device formaintaining the pivoted file member in its different'positions,

Fig. 6 is a perspective view of a device of modified construction, v

h Fig. 7 is a similar View showing the file members of this device in adifferent position,

Fig. :8 is a similar view showing a further modification of the device,y g v Fig.-9.is a view of the end of-one 0f the solid prongs, v

Fig. 10 is a view showingthe construction of a tubular prong,

Fig. 11 is a erosssection on the line 1111 of Fig; 12, and v h Fig. 12is a longitudinal part section on one of the tubular prongs.

In the arrangement shown in Figs. 1 to 5, the paper file. comprises twofile members 6 and 7, each composed of a wire frame. The frame 6 issecured to an angular plate '3 formed with lugs 24 whereby the frame ispivoted at 2 to a base plate 1 connected to the pivots.

back of the file cover. The framemember 2 at the free end of the frameserves as a finger rail for turning the frame about the The lateralframe members are looped as shown at 8 so as to form between them andthe plate 3, eyelets wherein the frame 7 is supported and about which itcan be hingedly adjusted. The wire forming the frame 6 terminates inprongs 4, and that of the frame 7 in similar prongs 5' whereon thepapers are filed. All the'prongs are arched and concentric about thehinge eyes- 8. 'The prongs 4c are staggered relative to the prongs 5 andengage indifferentapertures intthe papers. base plate as shown in Fig.1, the prongs are in fully closed position and engage all the papers.When the hinge 8 is raised from the base plate, as shown in Fig. 2, theprongs, while still in an overlapping position; are

opened out so as to allowthe papers to be turned over from one set ofprongs to the other. When the file members'are turned into an uprightposition, as shown in Fig. 3, the frame 7 is free to be turned into theposition shown by dotted lines, the prongs beingthen separated for theremoval or insertion of papers. In order to maintain the pivoted filemember in either of these positions, a double-armed finger lever 12 ispivoted at 16 to the plate 3 and formed at one end with a nose '10adapted to co-operate with stops 19 19 and 20 on a bracket 18 connectedto the base plate 1. A spring 17 controls the lever and tends to holdthe nose in engagement with the stops. The stops 19 and 20 are bevelledofl so as to allow the nose to slide over them on pressure being appliedto the file members, to the papers or to the cover for closing the file.The stop 19 is also bevelled so as to allow an opening movement of thefile under pressure. The stop 20, however, is adapted to engage thelever positively so as to prevent the members from being opened outbeyond the position. shown in When the file members rest on the Fig. 2and thus to prevent the prongs from being separated. The separation ofthe prongs can only be effected by a manipulation of the finger lever12, the latter being for this purpose provided with finger pieces 21 and21 projecting to difierent heights above the base of the file so thatone of them will be within easy reach of the fingers with the handresting on a more or less thick pile of papers.

A raised guide plate 22, which is preferably integral withthe base plate1, is arranged on the back of the file cover so as to engage the frameand guide it into the closed position when the file cover is closed.Another guide plate 23 is connected-to the adjacent side of the cover soas to form a continuation of the plate 22 when the side is turned up. 7

In the arrangement shown in Figs. 6 to 8, the frames 6 and 7 arereplaced by angular plates 6 and 7 to which the prongs l and 5 areconnected. The opening-out movement of the plate 6 is controlled bystops 11 formed on a bracket carried by a springcontrolled sliding rod10. The latter is held in a guide 25 on the back of the file cover andcan be operated by means of a finger lever 12"pivoted on the bracket 26forreleasing the plate 6. As shown in Fig. 8, another finger lever 15may be pivoted to the plate .6 for 'co-oper'ation with stops 14, formedon a bracket on the plate 7 so :as to control the movement of the latterplate about the. hinge 8. The lever 15 is controlled by a spring 27which tends to hold it clear of the stop 14, and an arm 13011 the leveris arranged so as to be engaged by the stops 11 for turning the leverinto engage ment with the stops 14. Thus the rod 10 and the lever 15will co-operate in arresting the file members, and a depression of thelever 12-will suffice for releasing the file members and allowing themto turn freely in either direction.

lVhen, :as in the arrangement just de scribed, one set'of prongs istubular and adapted to telescope on the other set, the tubular portionof the prongs may be threaded on :a wire support 6 ,as shown in Fig. 10,

said supports and the tubes being bent together through an angle B so astosecure the tubes in position. 1 1

The ends of the prongs are pointed, and to ensure their proper entranceintothe apertures of the papers when the latter are turned over from oneset of prongs to the other, the points, instead of being central, aredisplaced, :as shown in Fig. 9, in a radially outward direction, i. e.,in the direction in which the papers are pulled. The tubular prongs arebevelled ofif in the same manner as shown in Fig. 12, and the edges aremoreover curled oil inwards, as shown in Fig. 11, so as to prevent themfrom cutting into the papers.

I claim 2-- 1. A paper file of the character described comprising a pairof hingedly connected file members carrying arched prongs which areconcentric about the hinge, a base plate to which one of said members ispivoted so as to allow the hinge to be raised from the plate for openingout the prongs, and means for arresting the pivoted member in difierentangular positions relative to the base plate.

2. A structure as claimed in claim .1 wherein the pivoted member in oneofthe positions in which it is arrested, maintains the prongs in aslightly overlapping position and prevents them from being separated.

3. A structure as claimed in claim 1 wherein the arresting meanscomprise a springcontrolled finger lever mounted on the pivoted filemember, and three stops carried by the base plate so as to co-operatewith said lever and arrest the member with the prongs in fully closed,partly closed and open position, the stops in the end positions beingadapted to release the lever automatically under forcible pressure, thecentral .stop being adapted to engage the lever positively in theoutward direction of movement and require hand-operation of the lever inorder to separatethe prongs.

Y 4;. A structure. as claimed in claim 1 wherein the'arresting meanscomprise a springcontrolled finger leverv mounted on the pivoted filemember, andthree stops carried by the base plate so as to co-operatewith said lever and arrest the member with the prongs in fully closed,partly closed and open positions, the stops in the end positions beingadapted to release the lever automatically under forcible pressure thecentral stop being adapted to engage the lever positively in theoutward'direction and movement and require hand operation of the leverinorder to separate the prongs, the lever being provided with two fingerpieces extending to different height-s above the base of the file.

5. The structure claimed in claim 1 in combination with a file cover towhich the base plate is connected, and raised guide elements on saidcover for the non-pivoted file member.

'6. The structure claimed in claim 1 in combination with a file cover tothe back of which the base plate is connected, and raised guide memberson the back and on the adjacent side of the cover for the non-pivotedfile member.

7 A structure as claimed in claim 1 wherein the file members arecomposed of wire frames, the pivoted member comprising in addition aplate and being formed with looped portions between which and the platethe other frame is hingedly supported.

8. Astructure as claimed in claim 1 wherein the prongs are formed withpointed ends, the points being eccentric.

'9. A str-ucture'as claimed in claim 1 wherein the prongs of one filemember are tubular and adapted to telescope on the prongs of the othermember, the tubular prongs being threaded on supporting wires and benttogether with the latter so as to prongs in position.

10. A structure as claimed in claim 1 wherein the prongs of one filemember are tubular and adapted to telescope on the prongs of the othermember, the ends of the tubular prongs being bevelled off and formedwith in-turned edges.

THURE RENGMANN.

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